package com.springboot.util.http;

import cn.hutool.core.util.StrUtil;
import cn.hutool.json.JSONArray;
import cn.hutool.json.JSONObject;
import cn.hutool.json.JSONUtil;
import com.springboot.util.config.SystemProperties;
import jakarta.annotation.Resource;
import jakarta.servlet.http.HttpServletRequest;
import lombok.extern.slf4j.Slf4j;
import org.springframework.stereotype.Component;

import java.io.BufferedReader;
import java.io.DataOutputStream;
import java.io.IOException;
import java.io.InputStreamReader;
import java.io.UnsupportedEncodingException;
import java.net.HttpURLConnection;
import java.net.InetAddress;
import java.net.URL;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

/**
 * 根据IP地址获取详细的地域信息
 *
 * @project:Gocheck
 * @class:AddressUtils.java
 * @author:heguanhua E-mail:37809893@qq.com
 * @date：Nov 14, 2012 6:38:25 PM
 */
@Component
@Slf4j
public class MyHttpUtil {

    @Resource
    private SystemProperties systemProperties;
    /**
     * 方法描述 获取ip getIpJSON
     * @since: 1.0
     * @param ip
     * @return: JSONObject
     * @author: zyj
     * @date: 2023/5/29 16:00
     */
    public JSONObject getIpJSON(String  ip) {
        try {
            if (StrUtil.isBlank(ip) || StrUtil.equals(ip, "127.0.0.1")) {
                return null;
            }

            JSONObject jsonObject = this.getBaiduAddresses("query=" + ip+"&co=&resource_id=6006&oe=utf8", "utf-8");
            return jsonObject;
        } catch (UnsupportedEncodingException e) {
            log.error("获取ip getIpJSON错误 ", e);
        }
        return null;
    }

    /**
     * 方法描述 获取ip地址
     *
     * @param request
     * @since: 1.0
     * @return: String
     * @author: zyj
     * @date: 2023/5/29 15:52
     */
    public String getIpAddress(HttpServletRequest request) {
        String ip = request.getHeader("X-Forwarded-For");
        log.info("getIpAddress:{}",ip);
        if (ip != null && !"".equals(ip) && !"unknown".equalsIgnoreCase(ip)) {
            if (ip.indexOf(",") > 0) {
                ip = ip.substring(0, ip.indexOf(","));
            }
            if (ip.equals("127.0.0.1")) {
                //根据网卡取本机配置的IP
                InetAddress inet = null;
                try {
                    inet = InetAddress.getLocalHost();
                } catch (Exception e) {
                    e.printStackTrace();
                }
                ip = inet.getHostAddress();
            }
        }
        if (request.getHeader("X-Real-IP") != null && !"".equals(request.getHeader("X-Real-IP")) && !"unknown".equalsIgnoreCase(request.getHeader("X-Real-IP"))) {
            ip = request.getHeader("X-Real-IP");
        }
        if (request.getHeader("Proxy-Client-IP") != null && !"".equals(request.getHeader("Proxy-Client-IP")) && !"unknown".equalsIgnoreCase(request.getHeader("Proxy-Client-IP"))) {
            ip = request.getHeader("Proxy-Client-IP");
        }
        if (request.getHeader("WL-Proxy-Client-IP") != null && !"".equals(request.getHeader("WL-Proxy-Client-IP")) && !"unknown".equalsIgnoreCase(request.getHeader("WL-Proxy-Client-IP"))) {
            ip = request.getHeader("WL-Proxy-Client-IP");
        }
        if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
            ip = request.getRemoteAddr();
        }
        log.info("用户ip：" + ip);
        return ip;
    }


    /**
     * @param content        请求的参数 格式为：name=xxx&pwd=xxx
     * @param encodingString 服务器端请求编码。如GBK,UTF-8等
     * @return
     * @throws UnsupportedEncodingException
     */
    public JSONObject getBaiduAddresses(String content, String encodingString)
            throws UnsupportedEncodingException {
        // 这里调用pconline的接口
        String urlStr = systemProperties.getBaiduIp();
        String returnStr = this.getResult(urlStr, content, encodingString, "GET");
        if (returnStr != null) {
            // 处理返回的省市区信息
            JSONObject addressResult = JSONUtil.parseObj(returnStr);
            String status = addressResult.getStr("status");
            if(!StrUtil.equals("0", status)){
                return null;//无效IP，局域网测试
            }
            JSONArray data = addressResult.getJSONArray("data");
            if(data==null || data.size()<=0){
                return null;//无效IP，局域网测试
            }

            JSONObject jsonObject = new JSONObject();
            jsonObject.set("location", data.getJSONObject(0).getStr("location").split(" ")[0]);
            return jsonObject;
        }
        return null;
    }

    /**
     * @param urlStr   请求的地址
     * @param content  请求的参数 格式为：name=xxx&pwd=xxx
     * @param encoding 服务器端请求编码。如GBK,UTF-8等
     * @return
     */
    private String getResult(String urlStr, String content, String encoding, String method) {
        URL url = null;
        HttpURLConnection connection = null;
        try {
            url = new URL(urlStr);
            connection = (HttpURLConnection) url.openConnection();// 新建连接实例
            connection.setConnectTimeout(2000);// 设置连接超时时间，单位毫秒
            connection.setReadTimeout(2000);// 设置读取数据超时时间，单位毫秒
            connection.setDoOutput(true);// 是否打开输出流 true|false
            connection.setDoInput(true);// 是否打开输入流true|false
            connection.setRequestMethod(method);// 提交方法POST|GET
            connection.setUseCaches(false);// 是否缓存true|false
            connection.connect();// 打开连接端口
            DataOutputStream out = new DataOutputStream(connection
                    .getOutputStream());// 打开输出流往对端服务器写数据
            out.writeBytes(content);// 写数据,也就是提交你的表单 name=xxx&pwd=xxx
            out.flush();// 刷新
            out.close();// 关闭输出流
            BufferedReader reader = new BufferedReader(new InputStreamReader(
                    connection.getInputStream(), encoding));// 往对端写完数据对端服务器返回数据
            // ,以BufferedReader流来读取
            StringBuffer buffer = new StringBuffer();
            String line = "";
            while ((line = reader.readLine()) != null) {
                buffer.append(line);
            }
            reader.close();
            return buffer.toString();
        } catch (IOException e) {
            log.error("getResult error", e);
        } finally {
            if (connection != null) {
                connection.disconnect();// 关闭连接
            }
        }
        return null;
    }

    /**
     * unicode 转换成 中文
     *
     * @param theString
     * @return
     * @author fanhui 2007-3-15
     */
    public static String decodeUnicode(String theString) {
        char aChar;
        int len = theString.length();
        StringBuffer outBuffer = new StringBuffer(len);
        for (int x = 0; x < len; ) {
            aChar = theString.charAt(x++);
            if (aChar == '\\') {
                aChar = theString.charAt(x++);
                if (aChar == 'u') {
                    int value = 0;
                    for (int i = 0; i < 4; i++) {
                        aChar = theString.charAt(x++);
                        switch (aChar) {
                            case '0':
                            case '1':
                            case '2':
                            case '3':
                            case '4':
                            case '5':
                            case '6':
                            case '7':
                            case '8':
                            case '9':
                                value = (value << 4) + aChar - '0';
                                break;
                            case 'a':
                            case 'b':
                            case 'c':
                            case 'd':
                            case 'e':
                            case 'f':
                                value = (value << 4) + 10 + aChar - 'a';
                                break;
                            case 'A':
                            case 'B':
                            case 'C':
                            case 'D':
                            case 'E':
                            case 'F':
                                value = (value << 4) + 10 + aChar - 'A';
                                break;
                            default:
                                throw new IllegalArgumentException(
                                        "Malformed      encoding.");
                        }
                    }
                    outBuffer.append((char) value);
                } else {
                    if (aChar == 't') {
                        aChar = '\t';
                    } else if (aChar == 'r') {
                        aChar = '\r';
                    } else if (aChar == 'n') {
                        aChar = '\n';
                    } else if (aChar == 'f') {
                        aChar = '\f';
                    }
                    outBuffer.append(aChar);
                }
            } else {
                outBuffer.append(aChar);
            }
        }
        return outBuffer.toString();
    }

    /**
     * 方法描述 获取当前公网ip
     * @since: 1.0
     * @param
     * @return: String
     * @author: zyj
     * @date: 2023/6/5
     */
    public String getNowIP() throws IOException {
        String ip = null;
        String chinaz = "https://ip.chinaz.com";
        StringBuilder inputLine = new StringBuilder();
        String read = "";
        URL url = null;
        HttpURLConnection urlConnection = null;
        BufferedReader in = null;
        try {
            url = new URL(chinaz);
            urlConnection = (HttpURLConnection) url.openConnection();
            in = new BufferedReader(new InputStreamReader(urlConnection.getInputStream(), "UTF-8"));
            while ((read = in.readLine()) != null) {
                inputLine.append(read + "\r\n");
            }
            Pattern p = Pattern.compile("\\<dd class\\=\"fz24\">(.*?)\\<\\/dd>");
            Matcher m = p.matcher(inputLine.toString());
            if (m.find()) {
                String ipstr = m.group(1);
                ip = ipstr;
            }
        } finally {
            if (in != null) {
                in.close();
            }
        }
        if (StrUtil.isEmpty(ip)) {
            throw new RuntimeException();
        }
        return ip.trim();
    }



//    // 测试
//    public static void main(String[] args) {
//        MyHttpUtil addressUtils = new MyHttpUtil();
//        // 测试ip 219.136.134.157 中国=华南=广东省=广州市=越秀区=电信
//        String ip = "125.70.11.136";
//        String address = "";
//        try {
//            address = addressUtils.getAddresses("ip=" + ip, "utf-8");
//        } catch (Exception e) {
//            // TODO Auto-generated catch block
//            e.printStackTrace();
//        }
//        System.out.println(address);
//        // 输出结果为：广东省,广州市,越秀区
//    }
}  